How many comments can handle a single page?

For now, there's no possibility to have an embedded forum, or discussion board, in a page yet. So I was thinking. What about if I open a static page and I leave it for discussions only using the comments? In that case it would be almost like a sort of offline chat. But I thought, does it make sense? Is there a limit of comments users can post in a single page? Or other possible problems I can encounter later?

Thanks for your help :)

PS: just in case, I know:
- difference between .org .com
- no I don't want an external forum
- yes, I saw the P2 theme but it doesn't work for me and I don't want it in another external blog.

I was thinking to not use any nested option because if there are too many it's a mess and if there aren't enough it could be difficult the same. So just using the classic @ to refer to the person for the answer.

I don't think there is the possibility to set up the rules for the comments on one page but not in all the others. If I'm not wrong, every time I change a configuration, that configuration will be applied to all the rest of the blog.

@timethief that's a good point, I thought about it but I would use it for answers not related to the articles. Or for other short questions, or short news that I don't want to write a mini-article for it. After all, it would be the same with a discussion board embedded.